Extroverts must swim constantly: if they stop, they will suffocate.
Introverts never have to drink water. They can get all the water they need from reading books.
According to the principles of aerodynamics, extroverts should be incapable of flight. However, no one ever told extroverts this. Well actually they tried, but the extroverts didn’t listen.
What is commonly referred to as the introvert’s “second brain” is actually a walnut-sized cluster of neurons at the base of the spine. It exchanges information with the introvert’s true brain, but the neural impulses travel slowly. If you step on an introvert’s tail, it can take as long as half an hour before the introvert complains on Tumblr.